WO2018233990A1 - Vitre de véhicule dotée d'un dispositif à cristaux liquides - Google Patents

Vitre de véhicule dotée d'un dispositif à cristaux liquides Download PDF

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Publication number
WO2018233990A1
WO2018233990A1 PCT/EP2018/064087 EP2018064087W WO2018233990A1 WO 2018233990 A1 WO2018233990 A1 WO 2018233990A1 EP 2018064087 W EP2018064087 W EP 2018064087W WO 2018233990 A1 WO2018233990 A1 WO 2018233990A1
Authority
WO
WIPO (PCT)
Prior art keywords
layer
liquid crystal
vehicle window
window according
vehicle
Prior art date
Application number
PCT/EP2018/064087
Other languages
German (de)
English (en)
Inventor
Daniela BAIERL
Steffen Lorenz
Jonas DIETRICH
Max BUCHMANN
Jan Grothe
Oliver HEISEL
Original Assignee
Webasto SE
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Webasto SE filed Critical Webasto SE
Priority to CN201880042002.3A priority Critical patent/CN110869837B/zh
Priority to EP18740514.7A priority patent/EP3642671A1/fr
Priority to US16/621,421 priority patent/US10983392B2/en
Publication of WO2018233990A1 publication Critical patent/WO2018233990A1/fr

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133528—Polarisers
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/10009—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the number, the constitution or treatment of glass sheets
    • B32B17/10036—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the number, the constitution or treatment of glass sheets comprising two outer glass sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/10165—Functional features of the laminated safety glass or glazing
    • B32B17/10293—Edge features, e.g. inserts or holes
    • B32B17/10302—Edge sealing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/10165—Functional features of the laminated safety glass or glazing
    • B32B17/10431—Specific parts for the modulation of light incorporated into the laminated safety glass or glazing
    • B32B17/1044—Invariable transmission
    • B32B17/10458—Polarization selective transmission
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/10165—Functional features of the laminated safety glass or glazing
    • B32B17/10431—Specific parts for the modulation of light incorporated into the laminated safety glass or glazing
    • B32B17/10467—Variable transmission
    • B32B17/10495—Variable transmission optoelectronic, i.e. optical valve
    • B32B17/10504—Liquid crystal layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/1055—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the resin layer, i.e. interlayer
    • B32B17/10733—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the resin layer, i.e. interlayer containing epoxy
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/1055—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the resin layer, i.e. interlayer
    • B32B17/10743—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the resin layer, i.e. interlayer containing acrylate (co)polymers or salts thereof
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/1055—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the resin layer, i.e. interlayer
    • B32B17/10761—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the resin layer, i.e. interlayer containing vinyl acetal
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/1055—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the resin layer, i.e. interlayer
    • B32B17/1077—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the resin layer, i.e. interlayer containing polyurethane
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/1055—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the resin layer, i.e. interlayer
    • B32B17/10788—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the resin layer, i.e. interlayer containing ethylene vinylacetate
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/1055—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the resin layer, i.e. interlayer
    • B32B17/10798—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the resin layer, i.e. interlayer containing silicone
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60J—WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES; REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FOR VEHICLES
    • B60J1/00—Windows; Windscreens; Accessories therefor
    • B60J1/20—Accessories, e.g. wind deflectors, blinds
    • B60J1/2011—Blinds; curtains or screens reducing heat or light intensity
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60J—WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES; REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FOR VEHICLES
    • B60J3/00—Antiglare equipment associated with windows or windscreens; Sun visors for vehicles
    • B60J3/04—Antiglare equipment associated with windows or windscreens; Sun visors for vehicles adjustable in transparency
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/133302—Rigid substrates, e.g. inorganic substrates
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/133305—Flexible substrates, e.g. plastics, organic film
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F2201/00—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00
    • G02F2201/54—Arrangements for reducing warping-twist
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F2202/00—Materials and properties
    • G02F2202/28—Adhesive materials or arrangements

Definitions

  • the invention relates to a vehicle window having the features of the preamble of patent claim 1.
  • Such a vehicle window is known in practice and may be an adjustable or fixed roof element of a BCraft vehicle.
  • the vehicle window comprises a plate-like disk body, which as a rule consists of glass and forms the outer skin of the roof element.
  • the disk body On its inside, the disk body is provided with a liquid crystal arrangement which is electrically switchable and thus defines the transparency of the vehicle window.
  • the vehicle window is either largely translucent or largely opaque, so that it forms a shading arrangement.
  • liquid crystals in droplet form in a polymer.
  • the liquid crystals are disordered, which is why essentially no light transmission is possible. There is a milky appearance.
  • the liquid crystals align, whereby light can be transmitted.
  • SPD Small Particle Device
  • An SPD film comprises small, rod-shaped particles in a corresponding cell, which are embedded in a thin plastic film and initially aligned arbitrarily. Under an electric field, these particles align so that light can be transmitted.
  • the problem is that such SPD films only in blue and not can be produced in a neutral color, which can be readily used in a motor vehicle.
  • the invention has for its object to provide a vehicle window according to the initially mentioned type formed vehicle window, which has a liquid crystal arrangement with uniform shading behavior even with a three-dimensionally curved disk body.
  • a vehicle window which comprises a plate-like, planar or curved window body which has an outer side facing away from the vehicle environment and an inner side facing away from the outer side and on the inside of which a shading arrangement is formed, which is formed from a liquid crystal arrangement comprising a liquid crystal cell ,
  • the liquid crystal device comprises two films, between which the liquid crystal cell is arranged, and is connected to the disk body via a length expansion compensation layer.
  • the liquid crystal device By arranging the liquid crystal cell between two foils, the liquid crystal device can follow the shape of the plate-like and in particular curved disk body, which can be made of glass or a plastic, such as a polycarbonate or PMMA. As a result, it is also possible to form the disk body with a three-dimensional curvature, so that the disk body has a curvature along a disk longitudinal direction and a curvature along a disk transverse direction.
  • the length expansion compensation layer which may be particularly elastic, stresses are absorbed, which are for example due to a different thermal expansion behavior between the Schei- ben redesign and the liquid crystal arrangement can occur.
  • the liquid crystal arrangement can have a constant transmission of light, ie a constant transmission behavior, over its area, which preferably extends over a large part of the pane body, as a function of the switching state of the liquid crystal cell.
  • the function of the liquid crystal cell is introduced between two films, so that a good deformability of the liquid crystal arrangement is ensured.
  • a homogeneous layer thickness of the liquid crystal cell can be achieved over its extent.
  • the length expansion compensation layers preferably also have adhesive properties, so that it is possible to dispense with additional adhesive layers between the individual layers of the composite structure.
  • the disk body may have a three-dimensional curvature.
  • the disk body in two directions, in a roof panel along ahariquer- direction and along a vehicle longitudinal direction, each has a curvature with a radius of curvature between 1000 mm and 10000 mm, preferably between 2000 mm and 5000 mm, which can change over the curvature, d. H. does not have to be constant in the respective direction.
  • the radius of curvature may vary, that is, he does not have to be constant.
  • the liquid crystal device of the vehicle window according to the invention can be operated over a wide temperature range with short switching times of about one second.
  • a low voltage for operating the liquid crystal device may suffice.
  • the voltage formed as AC voltage may be below 30 V in particular.
  • the frequency of the AC voltage is for example 60 Hz, but may also be higher depending on the desired speed of the alignment of the liquid crystals and be up to 100 to 120 Hz or lower.
  • the liquid crystal device in the unswitched state provides a very low transmission, which is less than 1% for visible light.
  • the color of the liquid crystal array is gray, but can be customized by incorporation of dyes.
  • the vehicle window according to the invention is in particular a roof element of the relevant vehicle. This roof element may be formed as a fixed roof element, which is rigidly connected to the structure of the relevant vehicle, or as a movable roof element, which constitutes a cover element of a sliding roof arrangement.
  • the in particular optically isotropic length expansion compensation layer is an acrylate layer, a layer of thermoplastic polyurethane, an epoxy layer, a silicone layer or a layer of a crosslinking material, such as ethylene vinyl acetate (EVA) or polyvinyl butyral (PVB ).
  • a plastic film produced from a corresponding material can be used for this purpose, which forms a bond with the disk body and a film of the liquid crystal arrangement when heated by thermoplastic and / or crosslinking reactive properties.
  • a different material for the length expansion compensation layer that has elastic properties and can absorb stresses.
  • the length expansion compensation layer preferably has a thickness of at least 0.2 mm and in particular of at least 0.4 mm.
  • a disk inner body is arranged on the inside thereof.
  • the liquid crystal device is then arranged between the disk body, which forms the outside of the vehicle window, and the disk inner body.
  • the disk inner body may be formed corresponding to the disk body.
  • both the disk body and the disk inner body are formed of glass with a thickness of about 1.5 to 2.6 mm.
  • the inner pane body is formed from a thin glass which is flexible and thus adaptable to any curvature of the plate-like pane body.
  • the thin glass which may be a chemically toughened glass, for example, has a thickness between 0.1 mm and 1, 5 mm. The flexibility of a thin glass can compensate for the thermal expansion behavior of the liquid crystal array, so that in turn any damage to the liquid crystal array due to temperature changes can be counteracted.
  • a polarizer layer is arranged between the inner pane body and the liquid crystal arrangement in a preferred embodiment of the vehicle window.
  • the polarizer layer may be disposed between the disk body and the liquid crystal assembly.
  • the polarizer layer preferably has a polarization direction which is oriented at right angles to a polarization direction of the liquid crystal cell in the unswitched state.
  • the switched state is then assigned to the transmission state. But it is also conceivable that in the unswitched state of the liquid crystal cell, the polarization direction of the polarizer layer parallel to the polarization direction of
  • Liquid crystal cell is, so that then the transmission state of the device is present.
  • the polarizer layer is preferably connected to the liquid-crystal arrangement via a second length expansion compensation layer.
  • the second, preferably optically isotropic, length expansion compensation layer can also be formed from an acrylate layer, a layer of thermoplastic polyurethane, an epoxide layer or a silicone layer.
  • Other conceivable materials such as crosslinking materials, eg. As ethylene vinyl acetate (EVA) or Polyvi- nylbutyral (PVB), can be used, which have elastic properties and can absorb stresses.
  • EVA ethylene vinyl acetate
  • PVB Polyvi- nylbutyral
  • the second length expansion compensation layer preferably has a thickness of at least 0.2 mm and in particular of at least 0.4 mm.
  • the second length expansion compensation layer has a refractive index that corresponds to the refractive index of the films of the liquid crystal array.
  • a multiple refraction of the light when passing through the liquid crystal array, the second length expansion compensation layer and the polarizer layer can be at least partially counteracted.
  • a third expansion expansion compensation layer can be provided, which can compensate for a different thermal expansion behavior of the polarizer layer and the inner pane body.
  • the third, preferably optically isotropic, length expansion compensation layer is formed, for example, from an acrylate layer, a layer of thermoplastic polyurethane, an epoxy layer, a silicone layer or a layer of a crosslinking material such as ethylene vinyl acetate (EVA) or polyvinyl butyral (PVB) according to the other two length expansion compensation layers also made of a different material, which has elastic properties and can absorb stresses.
  • EVA ethylene vinyl acetate
  • PVB polyvinyl butyral
  • the third length expansion compensation layer preferably has a thickness of at least 0.2 mm, and more preferably at least 0.4 mm.
  • an edge seal is preferably provided, which at least the
  • the edge seal is for example made of an acrylate layer, a layer of thermoplastic polyurethane, an epoxy layer, a silicone layer or a layer of a cross-linking material, such as ethylene vinyl acetate (EVA) or polyvinyl butyral (PVB) is formed.
  • EVA ethylene vinyl acetate
  • PVB polyvinyl butyral
  • the two films of the liquid crystal arrangement are each formed, for example, from a transparent film of PET (polyethylene terephthalate) or polycarbonate, which preferably has a thickness of between 50 ⁇ m and 250 ⁇ m.
  • These two films each represent a substrate on which a conductive layer for electrical connection of the liquid crystal cell to an electrical system of the vehicle in question is arranged.
  • a respective alignment layer is expediently arranged on the conductive layers.
  • the alignment layers each delimit the liquid crystal cell and serve to advance the liquid crystals in the liquid crystal cell.
  • the two alignment layers are separated from one another by spacers, so that the thickness of the liquid crystal cell in which the liquid crystals are arranged is at least substantially constant over the extent of the liquid crystal arrangement.
  • the liquid crystal arrangement comprises a single liquid crystal cell which extends at least substantially over the entire liquid crystal arrangement, which preferably covers the potential see-through area of the vehicle window.
  • liquid crystal cell of the vehicle window is segmented according to the invention and has switchable subunits.
  • the liquid crystal arrangement is configured such that at least one of the two foils of the same is provided on the side facing away from the liquid crystal cell with an additional substrate layer which mechanically stabilizes the liquid crystal arrangement.
  • the supplemental substrate layer can reduce and even prevent any waviness of the liquid crystal array, which in turn reduces the risk of defect images.
  • the additive substrate layer can prevent the diffusion of moisture and oxygen toward the liquid crystal cell.
  • the additional substrate layer can also serve to reduce thermally induced expansion differences of the individual layers of the layer structure of the vehicle window according to the invention.
  • both films of the liquid crystal device are provided on their side facing away from the liquid crystal cell side with the additional substrate layer.
  • the supplemental substrate layer may be made of any suitable plastic material.
  • it is made of polyethylene and / or polycarbonate.
  • the attachment of the additional substrate layer to the relevant film of the liquid crystal arrangement preferably takes place via an adhesive layer, which may comprise a crosslinking material, such as ethylene-vinyl acetate (EVA).
  • EVA ethylene-vinyl acetate
  • the adhesive layer can be formed from a pressure-sensitive adhesive or PSA (Pressure-Sensitive Adhesive).
  • PSA Pressure-Sensitive Adhesive
  • the use of a thermoplastic polyurethane is conceivable.
  • the additional substrate layer is laminated to the relevant film. The lamination can be done after a roll lamination process.
  • a special embodiment of the vehicle window according to the invention comprises a light guide layer, which can be connected via its edge to a light source or is connected via its edge to a light source.
  • the light guide layer which can be integrated in a single-stage process during the manufacture of the vehicle window together with the liquid crystal arrangement and the possible further layers, can be an illumination system for the interior of the vehicle in question.
  • the light guide layer is part of a so-called ambient light illumination of the vehicle in question.
  • the functionality of the switchable liquid crystal arrangement and the functionality of a planar illumination, in particular an ambient light illumination are combined with one another.
  • the light guide layer and the liquid crystal device are separately and independently controllable, d. H. switchable so that the liquid crystal device assumes its transmission state or its blocking state and the optical fiber layer is lit or not illuminated.
  • the process parameters must be matched to the liquid crystal arrangement and the light guide layer so that both the adhesion of the two layers and the function of both layers is ensured.
  • the light guide layer is arranged on the side of the liquid crystal arrangement facing away from the vehicle surroundings. This means that the light guide layer is visible from the interior of the vehicle in question, regardless of the switching state of the liquid crystal device, when it is activated.
  • the light guide layer can form an inner visible surface of the vehicle window.
  • the light guide layer may be made of any suitable materials.
  • the optical waveguide layer may comprise a flat glass body, which offers the advantage that it may be possible to dispense with further protective layers on the inside of the vehicle window.
  • the light guide layer may comprise a plastic film and / or a plastic plate. This is particularly advantageous if the vehicle window is designed to be weight-optimized.
  • the optical waveguide layer In order to be able to give the optical waveguide layer specific desired luminous properties, it preferably contains scattering centers, which in particular can be formed by nanoparticles. The scattering centers are distributed in particular homogeneously in the light guide layer.
  • the optical waveguide layer has a printing which, for example, specifies a luminous pattern and can also serve as a reflection layer.
  • the liquid crystal arrangement has a reflection layer.
  • the optical waveguide layer may further comprise a scratch-resistant coating.
  • the production of the vehicle window according to the invention can take place in different ways.
  • the individual layers of the vehicle window are connected after a vacuum lamination or autoclave process, wherein the composite of the individual layers is exposed to specific pressures and temperatures.
  • adhesive plastic films can be used asChinanausdehnungskompensations füren that undergo thermoplastic or crosslinking properties in a heating compound with the other layers, that is with the disk body, the liquid crystal array, the polarizer layer and / or the disc inner body.
  • Vakuumlamination takes place a one-sided heating of the composite by a hot plate, wherein a pressurization takes place via a pressure difference in a chamber which is divided into two by a membrane.
  • the laminate is heated on all sides by means of circulating air. Air pressures up to about 15 bar can be set.
  • the manufacture of the vehicle window according to the invention can take place by a so-called optical bonding method, in which optically highly transparent and non-yellowing adhesives are used as length expansion compensation layers.
  • optically highly transparent and non-yellowing adhesives are used as length expansion compensation layers.
  • silicones can be used which have a high temperature stability and could later be removed without destruction.
  • polyurethanes, acrylates or epoxides could be used.
  • the invention also relates to a method for producing a vehicle window, comprising the following steps:
  • the structure comprising a disk body, a liquid crystal device comprising a liquid crystal cell and two films sandwiching the liquid crystal cell and a length expansion compensating layer between the liquid crystal device and the disk body at least the liquid crystal array and the length expansion compensation layer are arranged in a frame defining their relative position;
  • the structure arranged in the vacuum bag is heated while being subjected to the pressure.
  • the temperatures at which the structure is heated for example, between 50 ° C and 150 ° C.
  • the pressure exerted on the vacuum bag is preferably in a range between 1 bar and 20 bar, in particular between 1 bar and 12 bar. This process can be carried out in an autoclave chamber.
  • the structure can be covered with a pressure plate.
  • the pressure plate provides an auxiliary structure which ensures that the individual layers of the structure maintain their shape during the joining process.
  • the structure can have a disk inner body, a polarizer layer and / or a light conductor layer according to the invention.
  • both a switchable film in the form of the liquid crystal arrangement and a surface illumination system in the form of the light guide layer can be integrated into the vehicle window.
  • At least one of the two films can be provided with an additional substrate layer, which mechanically stabilizes the liquid crystal arrangement.
  • the additional substrate layer is laminated to the respective film of the liquid crystal array prior to arranging the structure in the frame.
  • both films of the liquid crystal device are each provided with an additional substrate layer.
  • Figure 1 is a plan view of a vehicle roof with a vehicle window after the
  • Figure 2a shows a section through the vehicle window, showing the layer structure thereof
  • Figure 2b shows a section through an alternative embodiment of a vehicle window
  • FIG. 3 shows a section through a further alternative embodiment of a
  • a vehicle window comprising a liquid crystal array and a light guide layer
  • FIG. 7 shows a schematic, perspective section through a liquid-crystal arrangement with additional substrate layers
  • FIG. 8 shows the application of the additional substrate layers to the liquid crystal arrangement.
  • the vehicle roof 10 is a panoramic roof, which is provided with an adjustable cover element 12 and a fixed roof element 14. These are each formed as a glass element and thus as a vehicle window.
  • the cover element 12 and the fixed roof element 14 each have the same layer structure, which is provided with a shading arrangement and which is illustrated with reference to FIG 2a.
  • the respectively formed as a vehicle window roof panels 12 and 14 each include a disc assembly 15 with a disk body 16 which is formed of a curved along a roof longitudinal direction and along a roof transverse direction glass plate and forms the outer skin of the corresponding vehicle window.
  • the vehicle windows each comprise a disk inner body 18, which is also formed from a curved glass plate.
  • the disk body 16 and the disk inner body 18 each have a thickness of about 2.1 mm and a successive three-dimensional curvature.
  • a liquid crystal arrangement 20 Disposed between the disk body 16 and the disk inner body 18 is a liquid crystal arrangement 20 forming a shading arrangement which comprises two films 22 and 24 made of PET or polycarbonate, between which a single liquid crystal cell 26 is arranged.
  • the two transparent films 22 and 24 each have a thickness of about 100 ⁇ .
  • conductive layers are integrated into the liquid crystal array 20 on the insides of the foils 22 and 24, which are connected via a corresponding, not shown contacting with the electrical system of the vehicle in question .
  • an alignment layer 221 or 241 is preferably arranged in each case, which delimits the liquid crystal cells 26.
  • the alignment layers 221 and 241 serve to pre-align the liquid crystals of the liquid crystal cell 26 in the non-switched state, and each may be formed of a polyimide or a UV-curing acrylate.
  • the liquid crystal device 20 is connected to the disk body 16 via a length expansion compensating layer 28 having adhesive properties.
  • a polarizer layer 32 is connected to the liquid crystal device 20 via a second length expansion compensation layer 30 comprising a linear polarizer whose polarization direction is oriented perpendicular to the polarization direction of the liquid crystal cell 26 in its blocking position.
  • the polarizer layer 32 is in turn connected to the disk inner body 18 via a length expansion compensation layer 34.
  • the length expansion compensation layers 28, 30 and 34 each having adhesive properties and bonding the disk body 16, the liquid crystal array 20, the polarizer layer 32 and the disk inner body 18, each have a thickness of about 0.4 mm and each consist of an acrylate layer , a layer of thermoplastic polyurethane, an epoxy layer, a silicone layer or a layer of a crosslinking material, such as ethylene vinyl acetate (EVA) or polyvinyl butyral (PVB).
  • the layer forming the vehicle windshield comprises an edge seal 36, which overlaps the edges of the length expansion compensation layers 28, 30 and 34 and the copessigkristallan- order 20 and the polarizer layer 32 and is disposed between the glass body 16 and the inner glass body 18.
  • FIG. 2 b shows a pane arrangement 15 which essentially corresponds to the pane arrangement according to FIG. 2 a, but differs therefrom in that the polarization layer 32 is arranged between the glass body 16 and the liquid crystal arrangement 20.
  • the length expansion compensation layers 28, 30, and 34 are disposed between the glass body 16 and the polarizing layer 32, between the polarizing layer 32 and the liquid crystal device 20, and between the liquid crystal device 20 and the disk inner body 18.
  • FIG. 3 shows an alternative pane arrangement 15 'for use in a lid element or a fixed roof element of the type shown in FIG.
  • the disk arrangement 15 ' has a disk body 16 to which a liquid crystal arrangement 20 is connected on the inside via a length expansion compensation layer 28 which has adhesive properties.
  • the liquid crystal array 20 comprises two sheets 22 and 24 of PET or polycarbonate, between which a single liquid crystal cell 26 is disposed.
  • 22 and 24 conductive layers are arranged on the inner sides of the films, which are connectable via a corresponding, not shown contacting with the electrical system of the vehicle concerned.
  • the liquid crystal cell 26 can be switched between a transmission state and a blocking state.
  • the liquid crystal device 20 is provided with a barrier film 38, which prevents diffusion of moisture and oxygen into the liquid crystal array 20.
  • An optical waveguide layer 40 which is formed from a thin plastic plate made of PMMA (polymethyl methacrylate) or the like, in which nanoparticles are embedded in order to produce scattering centers, is in turn connected to the liquid crystal arrangement 20 via a further length expansion compensation layer 34 '.
  • the light guide layer 40 On the inside, ie the side facing the vehicle interior, the light guide layer 40 is also provided with a scratch-resistant coating (hard coat).
  • the light guide layer 40 is connected via its peripheral edge with a light source 41, so that in a corresponding switching state of the light source, light can be coupled into the light guide layer 40 and this can thus be used as lighting for the relevant vehicle interior.
  • the length-expansion compensating layers 28 and 34 ' are formed corresponding to the length-expansion compensating layers of the embodiment of FIG.
  • a polarizer layer can be arranged between the liquid crystal arrangement 20 and the light guide layer 40.
  • two functionalities are thus integrated in the layer structure shown in FIG. 3, namely on the one hand a shading functionality in the form of the switchable liquid crystal device 20 together with the optionally provided polarizer layer and on the other hand an illumination functionality in the form of the optical waveguide layer 40. Both functional It can be controlled separately from each other.
  • the production of the disk arrangement 15 'shown in FIG. 3, which forms a lamination structure, takes place in the manner described below and is illustrated with reference to FIG.
  • the light guide layer 40, the liquid crystal device 20 provided with the barrier film 38, and the length expansion compensating layers 28 and 34 'are provided (FIG. 4a) and then stacked in a frame 44 and placed on the slider body 16.
  • the frame 44 is made of PTFE.
  • a pressure plate 46 is placed on top of the light guide layer 40, which is provided with the scratch-resistant coating 42, so that there is an intimate connection between the individual layers applied to the pane body 16 (FIG. 4b).
  • the frame, together with the layer structure comprising the disk body 16, the length expansion compensation layers 28 and 34 ', the liquid crystal device 20, the optical fiber layer 40 and the pressure plate 46 is placed in a vacuum bag 48 ( Figure 4c).
  • the vacuum bag 48 is then vented and exposed in a chamber to an elevated pressure P and an elevated temperature T, thereby forming the layers of the layer structure, ie the disk body 16, the length expansion compensation layer 28, the liquid crystal array 20, the length expansion compensation layer 34 'and the optical fiber layer 40 interconnect ( Figure 4d).
  • the disposed disk arrangement 15 ' can be removed from the vacuum bag 48 and removed from the frame 44 (FIG. 4e).
  • FIG. 5 shows a further alternative embodiment of a disc arrangement 15 "for use in a cover element or a fixed roof element of the type shown in Figure 1.
  • the disc arrangement 15" also comprises a disc body 16 on the inside via a length expansion compensation layer 28 having adhesive properties ,
  • a liquid crystal device 20 is connected, which is formed according to the embodiment of Figures 2 and 5.
  • the liquid crystal array 20 is provided on its side facing away from the disk body 16 with a barrier film 38 which prevents moisture and / or oxygen from diffusing in the direction of the liquid crystal array 20 and may consist of a vapor-deposited oxide layer.
  • a light conductor layer 40' which can be understood as a disk inner body and consists of a clear glass panel, is connected to the liquid crystal structure 20.
  • the light guide layer 40 ' On the side facing away from its inner viewing surface, the light guide layer 40 'is provided with a printing pattern 52 which supports the effect of the light guide layer 40 as an ambient light illumination device 40 'connected in the installed position with at least one light source 41, by means of the light in the light guide layer 40' can be coupled.
  • two functionalities are integrated, namely on the one hand a shading functionality in the form of the switchable liquid crystal arrangement 20 together with a possibly additionally provided polarizer layer and on the other hand an illumination functionality in the form of the light guide layer 40 'connected to the switchable light source 41 connected or
  • the production of the disc arrangement 15 "forming a lamination structure illustrated in FIG. 5 is essentially analogous to the production of the disc arrangement according to FIG. 3 as described with reference to FIG. 4 and is illustrated with reference to FIG.
  • These layers which are intended to form a layer structure with the disk body 16 in the arranged form, are then arranged in a frame 44 on the disk body 16 in a stacked form.
  • the frame 44 holds the relative position of the individual layers of the layer structure (FIG. 6b).
  • the disk body 16 is inserted into a vacuum bag together with the frame 44 which receives said layers (Figure 6c), which is then vented and subjected to an elevated pressure and temperature.
  • the optical waveguide layer 40 ', the liquid crystal device 20 and the disk body 16 are arranged together in one process step (FIG. 6d).
  • the finished product that is to say the disk arrangement 15 ", can be removed from the vacuum bag 48 and, after being detached from the frame 44, can be removed Use in a sunroof lid member, a fixed roof element or the like are provided ( Figure 6e).
  • FIG. 7 shows a liquid-crystal arrangement 20 'which is provided on both sides in each case with an additional substrate layer which consists of PET or polycarbonate and brings about an additional stiffening of the liquid-crystal arrangement 20'.
  • the additional substrate layers 50 are each connected via an adhesive layer 54 of ethylene vinyl acetate, which may be designed as a pressure-sensitive adhesive (PSA), with the respective film 22 or 24 of the liquid crystal device 20 '.
  • PSA pressure-sensitive adhesive
  • the attachment of the additional substrate layers 50 to the liquid crystal arrangement 20 ' can be carried out using rollers or rolls 56 according to a roller lamination method.
  • the liquid crystal device 20 ', together with the additive substrate layers 50 in the embodiments according to FIGS. 2, 3 and 5, can replace the respective liquid crystal device.

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  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Nonlinear Science (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mathematical Physics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Liquid Crystal (AREA)
  • Joining Of Glass To Other Materials (AREA)
  • Laminated Bodies (AREA)

Abstract

L'invention concerne une vitre de véhicule comprenant un corps de vitre (16) en forme de panneau qui présente une face extérieure orientée vers un environnement du véhicule et une face intérieure opposée à la face extérieure, la face intérieure comprenant un dispositif d'ombrage constitué d'un dispositif à cristaux liquides (20) comprenant une cellule à cristaux liquides (26). Le dispositif à cristaux liquides (20) comprend deux feuilles (22, 24) entre lesquelles est disposée la cellule à cristaux liquides (26) et reliée au corps de vitre (16) par l'intermédiaire d'au moins une couche de compensation de dilatation longitudinale (28).
PCT/EP2018/064087 2017-06-23 2018-05-29 Vitre de véhicule dotée d'un dispositif à cristaux liquides WO2018233990A1 (fr)

Priority Applications (3)

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CN201880042002.3A CN110869837B (zh) 2017-06-23 2018-05-29 具有液晶布置结构的车窗玻璃
EP18740514.7A EP3642671A1 (fr) 2017-06-23 2018-05-29 Vitre de véhicule dotée d'un dispositif à cristaux liquides
US16/621,421 US10983392B2 (en) 2017-06-23 2018-05-29 Vehicle window pane having a liquid crystal arrangement

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DE102017113987.7A DE102017113987A1 (de) 2017-06-23 2017-06-23 Fahrzeugscheibe mit Flüssigkristallanordnung
DE102017113987.7 2017-06-23

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WO (1) WO2018233990A1 (fr)

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WO2020156737A1 (fr) * 2019-01-28 2020-08-06 Webasto SE Vitre de véhicule dotée d'une couche de diffusion lumineuse
DE102022120348A1 (de) 2022-08-11 2024-02-22 Webasto SE Fahrzeugscheibe mit Scheibenkörperanordnung und Flüssigkristallanordnung
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DE112019003296T5 (de) * 2018-06-29 2021-04-01 Agp America S.A. Laminierte verglasung mit einer umschaltbaren flüssigkristallschicht
US11679649B2 (en) 2018-10-04 2023-06-20 Acr Ii Glass America Inc. Multifunctional switchable film and constructions including such a film
DE102019110813A1 (de) * 2019-04-26 2020-10-29 Bayerische Motoren Werke Aktiengesellschaft Schichtverbund mit veränderbaren optischen Eigenschaften
FR3114267B1 (fr) * 2020-09-18 2023-01-20 Saint Gobain Vitrage feuillete a cristaux liquides et son procede de fabrication
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DE102017113987A1 (de) 2018-12-27
CN110869837B (zh) 2023-02-28
US20200201113A1 (en) 2020-06-25
EP3642671A1 (fr) 2020-04-29
US10983392B2 (en) 2021-04-20

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